28 NOTES
Advanced Platform Development
Rebuilding a complete self-hosted data platform from FOSS on Kubernetes, one working component at a time.
→ Start hereDon't Ingest the CSV. Point Hive at It.
Hive still maps a table name to a directory of files
→ Read this noteLatest note · folio diagram
flowchart LR CSV["CSV in SeaweedFS<br/>one file, one directory"] -->|"CREATE TABLE<br/>external_location"| HIVE["Hive catalog<br/>file metastore"] WH["Iceberg / Postgres warehouse"] --> T["Trino 476"] HIVE --> T T --> J["JOIN"]
A fifty-megabyte CSV from a vendor is sitting in a bucket, or about to be. An agent will search it and parse it. That works until you need to join it to warehouse.public.stores, at which point you are either loading …
Current Series
20 NOTES
MCP Without the SDK
The Model Context Protocol taken apart one JSON message at a time, written by hand in Go.
→ Start here
5 NOTES
MCP Studies
Measured studies of MCP agent behavior: knowledge-layer ablation, stored-knowledge use, the measurement harness, knowledge pollution, and cross-reference document completion.
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5 NOTES
AI on a Leash
Mechanical verification for AI-written code: strict linting, coverage gates, mutation testing, and a pre-commit gate that refuses the commit.
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Recent Notes
145
Don't Sandbox Python. Embed Starlark.
starlark-go in a Go server: FileOptions, host bindings, and a cancel watchdog
2026-08-24
144God Packages and Other Slow Failures
Structural ratchets for AI-assisted Go, six months into make verify
2026-08-22
143Do Cross-References Help LLM Agents Complete Documents?
The agent found every page certified unreachable. Links cut search cost and keep working when search is off; they do not change what it reaches
2026-08-20
142Knowledge Pollution: Verification Displacement, Capability, and the Price of a Curation Gate
A wrong note that passed review spread only where the agent could have checked it, and only on Haiku 4.5: 16 of 24, against 0 of 24 on Sonnet 5 and Opus 5
2026-08-17
141On-Prem GPUs in a Boring Kubernetes Cluster
Adding your own GPUs to the platform with the NVIDIA GPU Operator
2026-08-12
140One Cluster Across Clouds and Your Garage: Hybrid k3s With WireGuard
A single Kubernetes cluster spanning cloud regions and your own hardware, encrypted over the public internet
2026-08-10
139What Happened to the Blockchain Chapter
Why the chapter is cut from this rebuild, and where tamper-evidence lives in 2026
2026-08-08
138Serverless Without the Cloud: Knative on Your Cluster
Scale-to-zero functions you own, after OpenFaaS moved the good parts behind a paywall
2026-08-06